Extruded wiper backing strip



FIG. 1 is a perspective view of an extruded wiper backing strip showing our new design, the strip is shown broken away in the middle to indicate indeterminate length; and,

FIG. 2 is a front elevational view on enlarged scale of the extruded wiper backing strip shown in FIG. 1, the rear view being identical to the front view. 

The ornamental design for an extruded wiper backing strip, as shown and described. 